pub struct FeatureFlag(/* private fields */);

Implementations§

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impl FeatureFlag

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pub const TemplateLiterals: Self = _

transform-template-literals

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pub const Literals: Self = _

transform-literals

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pub const FunctionName: Self = _

transform-function-name

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pub const ArrowFunctions: Self = _

transform-arrow-functions

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pub const BlockScopedFunctions: Self = _

transform-block-scoped-functions

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pub const Classes: Self = _

transform-classes

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pub const ObjectSuper: Self = _

transform-object-super

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pub const ShorthandProperties: Self = _

transform-shorthand-properties

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pub const DuplicateKeys: Self = _

transform-duplicate-keys

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pub const ComputedProperties: Self = _

transform-computed-properties

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pub const ForOf: Self = _

transform-for-of

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pub const StickyRegex: Self = _

transform-sticky-regex

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pub const DotAllRegex: Self = _

transform-dotall-regex

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pub const UnicodeRegex: Self = _

transform-unicode-regex

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pub const Spread: Self = _

transform-spread

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pub const Parameters: Self = _

transform-parameters

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pub const Destructuring: Self = _

transform-destructuring

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pub const BlockScoping: Self = _

transform-block-scoping

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pub const TypeOfSymbol: Self = _

transform-typeof-symbol

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pub const NewTarget: Self = _

transform-new-target

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pub const Regenerator: Self = _

transform-regenerator

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pub const ExponentiationOperator: Self = _

transform-exponentiation-operator

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pub const AsyncToGenerator: Self = _

transform-async-to-generator

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pub const AsyncGeneratorFunctions: Self = _

proposal-async-generator-functions

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pub const ObjectRestSpread: Self = _

proposal-object-rest-spread

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pub const UnicodePropertyRegex: Self = _

proposal-unicode-property-regex

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pub const JsonStrings: Self = _

proposal-json-strings

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pub const OptionalCatchBinding: Self = _

proposal-optional-catch-binding

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pub const NamedCapturingGroupsRegex: Self = _

transform-named-capturing-groups-regex

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pub const MemberExpressionLiterals: Self = _

transform-member-expression-literals

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pub const PropertyLiterals: Self = _

transform-property-literals

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pub const ReservedWords: Self = _

transform-reserved-words

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pub const ExportNamespaceFrom: Self = _

proposal-export-namespace-from

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pub const NullishCoalescing: Self = _

proposal-nullish-coalescing-operator

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pub const LogicalAssignmentOperators: Self = _

proposal-logical-assignment-operators

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pub const OptionalChaining: Self = _

proposal-optional-chaining

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pub const ClassProperties: Self = _

proposal-class-properties

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pub const NumericSeparator: Self = _

proposal-numeric-separator

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pub const PrivateMethods: Self = _

proposal-private-methods

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pub const ClassStaticBlock: Self = _

proposal-class-static-block

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pub const PrivatePropertyInObject: Self = _

proposal-private-property-in-object

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pub const UnicodeEscapes: Self = _

transform-unicode-escapes

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pub const BugfixAsyncArrowsInClass: Self = _

bugfix/transform-async-arrows-in-class

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pub const BugfixEdgeDefaultParam: Self = _

bugfix/transform-edge-default-parameters

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pub const BugfixTaggedTemplateCaching: Self = _

bugfix/transform-tagged-template-caching

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pub const BugfixSafariIdDestructuringCollisionInFunctionExpression: Self = _

bugfix/transform-safari-id-destructuring-collision-in-function-expression

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pub const BugfixTransformEdgeFunctionName: Self = _

bugfix/transform-edge-function-name

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pub const BugfixTransformSafariBlockShadowing: Self = _

bugfix/transform-safari-block-shadowing

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pub const BugfixTransformSafariForShadowing: Self = _

bugfix/transform-safari-for-shadowing

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pub const BugfixTransformV8SpreadParametersInOptionalChaining: Self = _

bugfix/transform-v8-spread-parameters-in-optional-chaining

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impl FeatureFlag

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pub const fn empty() -> Self

Get a flags value with all bits unset.

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pub const fn all() -> Self

Get a flags value with all known bits set.

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pub const fn bits(&self) -> u64

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

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pub const fn from_bits(bits: u64) -> Option<Self>

Convert from a bits value.

This method will return None if any unknown bits are set.

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pub const fn from_bits_truncate(bits: u64) -> Self

Convert from a bits value, unsetting any unknown bits.

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pub const fn from_bits_retain(bits: u64) -> Self

Convert from a bits value exactly.

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pub fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

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pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

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pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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pub const fn intersects(&self, other: Self) -> bool

Whether any set bits in a source flags value are also set in a target flags value.

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pub const fn contains(&self, other: Self) -> bool

Whether all set bits in a source flags value are also set in a target flags value.

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pub fn insert(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

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pub fn remove(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

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pub fn toggle(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

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pub fn set(&mut self, other: Self, value: bool)

Call insert when value is true or remove when value is false.

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pub const fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.

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pub const fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.

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pub const fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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pub const fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.

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pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

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impl FeatureFlag

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pub const fn iter(&self) -> Iter<FeatureFlag>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

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pub const fn iter_names(&self) -> IterNames<FeatureFlag>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations§

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impl Binary for FeatureFlag

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
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impl BitAnd for FeatureFlag

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fn bitand(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.

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type Output = FeatureFlag

The resulting type after applying the & operator.
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impl BitAndAssign for FeatureFlag

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fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

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impl BitOr for FeatureFlag

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fn bitor(self, other: FeatureFlag) -> Self

The bitwise or (|) of the bits in two flags values.

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type Output = FeatureFlag

The resulting type after applying the | operator.
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impl BitOrAssign for FeatureFlag

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fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

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impl BitXor for FeatureFlag

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fn bitxor(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.

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type Output = FeatureFlag

The resulting type after applying the ^ operator.
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impl BitXorAssign for FeatureFlag

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fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

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impl Clone for FeatureFlag

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fn clone(&self) -> FeatureFlag

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Default for FeatureFlag

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fn default() -> FeatureFlag

Returns the “default value” for a type. Read more
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impl Extend<FeatureFlag> for FeatureFlag

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fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

The bitwise or (|) of the bits in each flags value.

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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl Flags for FeatureFlag

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const FLAGS: &'static [Flag<FeatureFlag>] = _

The set of defined flags.
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type Bits = u64

The underlying bits type.
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fn bits(&self) -> u64

Get the underlying bits value. Read more
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fn from_bits_retain(bits: u64) -> FeatureFlag

Convert from a bits value exactly.
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fn empty() -> Self

Get a flags value with all bits unset.
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fn all() -> Self

Get a flags value with all known bits set.
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fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value. Read more
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fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.
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fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set. Read more
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fn iter(&self) -> Iter<Self>

Yield a set of contained flags values. Read more
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fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values. Read more
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fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.
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fn is_all(&self) -> bool

Whether all known bits in this flags value are set.
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fn intersects(&self, other: Self) -> bool
where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.
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fn contains(&self, other: Self) -> bool
where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.
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fn insert(&mut self, other: Self)
where Self: Sized,

The bitwise or (|) of the bits in two flags values.
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fn remove(&mut self, other: Self)
where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn toggle(&mut self, other: Self)
where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.
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fn set(&mut self, other: Self, value: bool)
where Self: Sized,

Call [Flags::insert] when value is true or [Flags::remove] when value is false.
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fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.
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fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.
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fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.
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fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.
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impl FromIterator<FeatureFlag> for FeatureFlag

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fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

The bitwise or (|) of the bits in each flags value.

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impl IntoIterator for FeatureFlag

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type Item = FeatureFlag

The type of the elements being iterated over.
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type IntoIter = Iter<FeatureFlag>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl LowerHex for FeatureFlag

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
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impl Not for FeatureFlag

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fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

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type Output = FeatureFlag

The resulting type after applying the ! operator.
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impl Octal for FeatureFlag

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
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impl PublicFlags for FeatureFlag

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type Primitive = u64

The type of the underlying storage.
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type Internal = InternalBitFlags

The type of the internal field on the generated flags type.
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impl Sub for FeatureFlag

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fn sub(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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type Output = FeatureFlag

The resulting type after applying the - operator.
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impl SubAssign for FeatureFlag

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fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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impl UpperHex for FeatureFlag

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
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impl Copy for FeatureFlag

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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impl<F, W, T, D> Deserialize<With<T, W>, D> for F
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fn deserialize( &self, deserializer: &mut D ) -> Result<With<T, W>, <D as Fallible>::Error>

Deserializes using the given deserializer
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Gets the layout of the type.
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impl<T> Pipe for T
where T: ?Sized,

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fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more
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where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

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where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

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type Metadata = ()

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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

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where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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where T: Clone,

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type Owned = T

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type Error = Infallible

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where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

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